FIELD: engineering of well jet devices for oil extraction and technology for operating aforementioned devices.
SUBSTANCE: device contains body with bypass windows and moveable supporting bushing, spring-loaded relatively to the body, with mounting spot for depression insert with jet pump. Bypass windows are made in bushing wall, and a flange is made in lower part of bushing. Circular recess is made in the body above bypass windows, limiting flange movement and connecting bypass windows of the body. Jet pump channels are made in depression insert. Jet pump outlet channel is connected to body hollow above the jet pump. From below, a branch pipe with packer and at least one reverse valve below the packer, is connected to the body. Flexible pipe with autonomous logging device and apertures is connected to branch pipe, with moving sealing unit pinned onto flexible pipe. Supporting ring is mounted in casing column with through channel for sealing unit. Minimal diameter of through channel is not less than by 6mm greater than external diameter of flexible pipe. Diameter of sealing unit is not less than by 4mm lesser than internal diameter of casing column in supporting ring mounting spot.
EFFECT: intensification of research and testing of curvilinear or horizontal wells with open or cased shafts.
2 cl, 2 dwg
